Protecting Oahu's Watersheds

Naohia Falls (Kalihi Ice Ponds) is located in a watershed area managed by the Honolulu Board of Water Supply (BWS). Contrary to posts found on social media, blogs, and various websites (hiking, travel, local activities, lifestyle, health and wellness, and general interest), there is no legal access to Naohia Falls (Kalihi Ice Ponds). 

naohia falls kalihi ice pondsThe area is part of a protected watershed that helps to support Oahu's fresh water supply for more than a million people on island. No access of any kind to the area is permitted so that the watershed may return to a more pristine state.

Anyone attempting to reach Naohia Falls (Kalihi Ice Ponds) would be trespassing and subject to citation by the Honolulu Police Department. Those cited must appear in court and may face fines up to $2,000, community service, and/or up to six months in prison.

Malama the Aina and the Wai

Illegal access increases the watershed's exposure to invasive species and diseases spread by humans and animals hiking the land or swimming in the water, litter and biological waste that gets left behind, and accelerated forest degradation due to soil erosion. It will take each and every one of us working together to protect our natural resources for today and the future. Please respect Oahu's local fresh water resources by not intruding onto protected watershed land. Mahalo for your kokua.

Looking for Trail Alternatives on Oahu?

Find Current Information on Public Trails in Hawaii on the Na Ala Hele Trail & Access Website

Residents and visitors may enjoy the beauty of the Hawaiian islands on one of the many legal hiking trails that are available to the public. Announcements regarding closures of or conditions on public trails managed by the State of Hawaii may be found online at

na ala hele trail access program website